FNRS-3
The FNRS-3 or FNRS III is a bathyscaphe of the French Navy. It is currently presevered at Toulon. She set world depth records, competing against a more refined version of her design, the first Bathyscaphe Trieste. The French Navy eventually replaced her with the bathyscaphe FNRS-4, in the 1960s.
Read more about Fnrs-3.